Malicious PDF — malware analysis report

Static analysis result for SHA-256 463615afdb1b706d…

MALICIOUS

PDF

51.7 KB Created: 2020-08-31 22:31:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a42954e4a8001380914708eea4e5e2d2 SHA-1: 086ae97e84ac02007b00963972dec267308d4d2c SHA-256: 463615afdb1b706d429659503cae33bcf07275543432cfeb625250a95eee07ba
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged as malicious due to a critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.me/wix?keyword=drunken+sailor+bagpipe+sheet+music', which is likely the primary malicious payload delivery mechanism. The presence of numerous other benign-looking Shopify links suggests an attempt to blend in or create a link farm for SEO manipulation.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.me/wix?keyword=drunken+sailor+bagpipe+sheet+music
    • https://cdn.shopify.com/s/files/1/0436/0981/7251/files/59347142045.pdf
    • https://cdn.shopify.com/s/files/1/0431/5712/7336/files/73393027434.pdf
    • https://cdn.shopify.com/s/files/1/0441/0851/3432/files/44043501587.pdf
    • https://cdn.shopify.com/s/files/1/0433/7863/8999/files/91373192918.pdf
    • https://cdn.shopify.com/s/files/1/0437/5629/0206/files/cheesecake_factory_bread_nutrition_information.pdf
    • https://cdn.shopify.com/s/files/1/0433/0291/2168/files/blender_animation_tutorial_beginner.pdf
    • https://cdn.shopify.com/s/files/1/0429/9476/1877/files/anatomie_de_appareil_digestif.pdf
    • https://cdn.shopify.com/s/files/1/0431/8268/6372/files/tinkers_tool_modifiers.pdf
    • https://cdn.shopify.com/s/files/1/0437/4387/1127/files/job_acceptance_letter.pdf
    • https://cdn.shopify.com/s/files/1/0434/8107/1782/files/49748499951.pdf
    • https://cdn.shopify.com/s/files/1/0431/7098/8196/files/89931247705.pdf
    • https://cdn.shopify.com/s/files/1/0431/7921/2962/files/ramiro.pdf
    • https://cdn.shopify.com/s/files/1/0437/1703/4134/files/pekulipowimiwabuxafepaxe.pdf
    • https://cdn.shopify.com/s/files/1/0432/4176/7072/files/protein_shake_nutrition_information.pdf
    • https://cdn.shopify.com/s/files/1/0430/6409/8970/files/assalamu_alaikum_walaikum_salam_video_song.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000883a.bin
dd16ec32894b579a5d16e4507c252242549da2baf9f3622ae708f3c003f7538d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x883A 5548 bytes
font_01_sfnt_off00009af9.bin
ad3b7cf91c24fc6dfc2a08f88228db59bd507845de28b500b02ad2937d33b247		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9AF9 12180 bytes

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